./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:31:21,242 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:31:21,371 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-12 02:31:21,383 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:31:21,383 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:31:21,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:31:21,421 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:31:21,422 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:31:21,423 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:31:21,424 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:31:21,425 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:31:21,426 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-12 02:31:21,426 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-12 02:31:21,427 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-12 02:31:21,427 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-12 02:31:21,428 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-12 02:31:21,429 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-12 02:31:21,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:31:21,430 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-12 02:31:21,430 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:31:21,431 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:31:21,432 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-12 02:31:21,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-12 02:31:21,433 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-12 02:31:21,434 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:31:21,434 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:31:21,435 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-12 02:31:21,435 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:31:21,436 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:31:21,436 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:31:21,437 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:31:21,437 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:31:21,438 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-12 02:31:21,438 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7e15211580ea4e53f751b22847dfea4720c9dc42574c861d991d991eb47919b [2023-11-12 02:31:21,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:31:21,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:31:21,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:31:21,833 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:31:21,834 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:31:21,835 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2023-11-12 02:31:24,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:31:25,210 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:31:25,211 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/sv-benchmarks/c/termination-crafted-lit/HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2023-11-12 02:31:25,219 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/data/65e975d82/27b5f2453c334d11b382a8653b9261c9/FLAG6092dc499 [2023-11-12 02:31:25,234 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/data/65e975d82/27b5f2453c334d11b382a8653b9261c9 [2023-11-12 02:31:25,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:31:25,239 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:31:25,241 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:31:25,241 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:31:25,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:31:25,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1f72fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25, skipping insertion in model container [2023-11-12 02:31:25,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,279 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:31:25,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:31:25,473 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:31:25,498 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:31:25,515 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:31:25,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25 WrapperNode [2023-11-12 02:31:25,516 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:31:25,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:31:25,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:31:25,519 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:31:25,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,534 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,558 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 55 [2023-11-12 02:31:25,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:31:25,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:31:25,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:31:25,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:31:25,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,580 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,587 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,597 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:31:25,600 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:31:25,601 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:31:25,601 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:31:25,602 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (1/1) ... [2023-11-12 02:31:25,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-12 02:31:25,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:31:25,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-12 02:31:25,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-12 02:31:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:31:25,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:31:25,778 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:31:25,780 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:31:25,928 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:31:25,936 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:31:25,936 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:31:25,938 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:25 BoogieIcfgContainer [2023-11-12 02:31:25,939 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:31:25,940 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-12 02:31:25,940 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-12 02:31:25,944 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-12 02:31:25,946 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:31:25,946 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 12.11 02:31:25" (1/3) ... [2023-11-12 02:31:25,947 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69f4c6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:31:25, skipping insertion in model container [2023-11-12 02:31:25,948 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:31:25,948 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:31:25" (2/3) ... [2023-11-12 02:31:25,948 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@69f4c6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 12.11 02:31:25, skipping insertion in model container [2023-11-12 02:31:25,949 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-12 02:31:25,949 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:25" (3/3) ... [2023-11-12 02:31:25,950 INFO L332 chiAutomizerObserver]: Analyzing ICFG HenzingerJhalaMajumdarSutre-POPL2002-LockingExample.c [2023-11-12 02:31:26,015 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-12 02:31:26,015 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-12 02:31:26,015 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-12 02:31:26,016 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-12 02:31:26,016 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-12 02:31:26,016 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-12 02:31:26,016 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-12 02:31:26,017 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-12 02:31:26,022 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:26,045 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2023-11-12 02:31:26,045 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:31:26,045 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:31:26,051 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-12 02:31:26,052 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-12 02:31:26,052 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-12 02:31:26,053 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 25 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:31:26,055 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2023-11-12 02:31:26,055 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-12 02:31:26,056 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-12 02:31:26,056 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1] [2023-11-12 02:31:26,057 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2023-11-12 02:31:26,067 INFO L748 eck$LassoCheckResult]: Stem: 24#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;~LOCK~0 := 0; 5#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_#t~nondet2#1, main_#t~post3#1, main_#t~nondet1#1, main_#t~nondet4#1, main_#t~post5#1, main_~got_lock~0#1, main_~old~0#1, main_~new~0#1;havoc main_~got_lock~0#1;main_~old~0#1 := 0;main_~new~0#1 := 0;havoc main_#t~nondet0#1; 20#L34true assume 0 != main_#t~nondet0#1;havoc main_#t~nondet0#1; 17#L35-4true [2023-11-12 02:31:26,068 INFO L750 eck$LassoCheckResult]: Loop: 17#L35-4true main_~got_lock~0#1 := 0;havoc main_#t~nondet2#1; 19#L37true assume !(0 != main_#t~nondet2#1);havoc main_#t~nondet2#1; 14#L37-2true assume !(0 != main_~got_lock~0#1); 6#L35-1true havoc main_#t~nondet1#1; 10#L35-2true assume !!(0 != main_#t~nondet1#1);havoc main_#t~nondet1#1; 17#L35-4true [2023-11-12 02:31:26,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:26,077 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-12 02:31:26,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:26,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447184480] [2023-11-12 02:31:26,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:26,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:31:26,178 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:31:26,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:31:26,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:31:26,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:26,200 INFO L85 PathProgramCache]: Analyzing trace with hash 37600282, now seen corresponding path program 1 times [2023-11-12 02:31:26,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:26,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672300847] [2023-11-12 02:31:26,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:26,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:31:26,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:31:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:31:26,213 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:31:26,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:31:26,215 INFO L85 PathProgramCache]: Analyzing trace with hash 119669785, now seen corresponding path program 1 times [2023-11-12 02:31:26,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:31:26,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785232980] [2023-11-12 02:31:26,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:31:26,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:31:26,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:31:26,225 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:31:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:31:26,233 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:31:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:31:26,444 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:31:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:31:26,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 12.11 02:31:26 BoogieIcfgContainer [2023-11-12 02:31:26,485 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-12 02:31:26,486 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-12 02:31:26,486 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-12 02:31:26,486 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-12 02:31:26,487 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:31:25" (3/4) ... [2023-11-12 02:31:26,489 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-12 02:31:26,555 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/witness.graphml [2023-11-12 02:31:26,555 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-12 02:31:26,557 INFO L158 Benchmark]: Toolchain (without parser) took 1317.01ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 75.9MB in the beginning and 103.0MB in the end (delta: -27.2MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2023-11-12 02:31:26,560 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 123.7MB. Free memory was 88.4MB in the beginning and 88.4MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:31:26,566 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.90ms. Allocated memory is still 123.7MB. Free memory was 75.9MB in the beginning and 66.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 02:31:26,567 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.19ms. Allocated memory is still 123.7MB. Free memory was 66.1MB in the beginning and 64.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 02:31:26,568 INFO L158 Benchmark]: Boogie Preprocessor took 38.98ms. Allocated memory is still 123.7MB. Free memory was 64.5MB in the beginning and 63.7MB in the end (delta: 821.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:31:26,568 INFO L158 Benchmark]: RCFGBuilder took 338.67ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 63.3MB in the beginning and 125.1MB in the end (delta: -61.8MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2023-11-12 02:31:26,569 INFO L158 Benchmark]: BuchiAutomizer took 545.34ms. Allocated memory is still 159.4MB. Free memory was 124.0MB in the beginning and 105.0MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-12 02:31:26,569 INFO L158 Benchmark]: Witness Printer took 69.48ms. Allocated memory is still 159.4MB. Free memory was 104.1MB in the beginning and 103.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-12 02:31:26,573 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 123.7MB. Free memory was 88.4MB in the beginning and 88.4MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.90ms. Allocated memory is still 123.7MB. Free memory was 75.9MB in the beginning and 66.1MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.19ms. Allocated memory is still 123.7MB. Free memory was 66.1MB in the beginning and 64.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.98ms. Allocated memory is still 123.7MB. Free memory was 64.5MB in the beginning and 63.7MB in the end (delta: 821.6kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 338.67ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 63.3MB in the beginning and 125.1MB in the end (delta: -61.8MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 545.34ms. Allocated memory is still 159.4MB. Free memory was 124.0MB in the beginning and 105.0MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 69.48ms. Allocated memory is still 159.4MB. Free memory was 104.1MB in the beginning and 103.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 35]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L13] int LOCK; VAL [LOCK=0] [L32] int got_lock; [L33] int old = 0, new = 0; [L34] COND TRUE __VERIFIER_nondet_int() Loop: [L36] got_lock = 0 [L37] COND FALSE !(__VERIFIER_nondet_int()) [L41] COND FALSE !(\read(got_lock)) [L44] COND TRUE __VERIFIER_nondet_int() End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 35]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L13] int LOCK; VAL [LOCK=0] [L32] int got_lock; [L33] int old = 0, new = 0; [L34] COND TRUE __VERIFIER_nondet_int() Loop: [L36] got_lock = 0 [L37] COND FALSE !(__VERIFIER_nondet_int()) [L41] COND FALSE !(\read(got_lock)) [L44] COND TRUE __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-12 02:31:26,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6fac9e85-deed-4f03-9aaa-c46fae05754e/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)